<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格练习</title>
</head>
<body>
     <table border="3px">
          <tr>
              <TH>序号</TH>
              <TH>姓名</TH>
              <TH>专业</TH>
          </tr>
          <tr>
              <td>1</td>
              <td>吵吵</td>
              <td>框架</td>
          </tr>
          <tr>
              <td>2</td>
              <td>吵吵</td>
              <td>SEX</td>
          </tr>
     </table>
     <table border="2px">
         <tr>
             <td>1-1</td>
             <td>1-2</td>
             <td>1-3</td>
             <td>1-4</td>
         </tr>
         <tr>
             <td colspan="2">2-1</td>
             <!--<td>2-2</td>-->
             <td>2-3</td>
             <td rowspan="3">2-4</td>
         </tr>
         <tr>
             <td>3-1</td>
             <td>3-2</td>
             <td>3-3</td>
            <!--<td>3-4</td>-->
         </tr>
         <tr>
             <td>4-1</td>
             <td>4-2</td>
             <td>4-3</td>
             <!--<td>4-4</td>-->
         </tr>
     </table>

     <table border="2px">
         <tr>
             <td>商品编号</td>
             <td>商品名称</td>
             <td>商品价格</td>

         </tr>
         <tr>
             <td >1</td>
             <td>小米Air</td>
             <td>5877</td>
         </tr>
         <tr>
             <td>2</td>
             <td>华为54656</td>
             <td>8877</td>
         </tr>
         <tr>
             <td>总价</td>
             <td colspan="2">10000</td>

         </tr>
     </table>
</body>
</html>